package servlet;

import pojo.Dept;
import service.DeptService;
import service.impl.DeptServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet(urlPatterns = "/dept")
public class DeptServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        DeptService deptService = new DeptServiceImpl();
        req.setCharacterEncoding("utf-8");
        String action = req.getParameter("action");
        if ("list".equals(action)) {
            // 接收参数
            String dname = req.getParameter("dname");
            Dept condition = new Dept(dname);
            List<Dept> depts = deptService.findAll(condition);
            // 把数据放到请求域中
            req.setAttribute("depts", depts);
            req.setAttribute("condition", condition);
            // 在哪个页面显示数据
            req.getRequestDispatcher("/list.jsp").forward(req, resp);
        }else if("add".equals(action)){
            //接收参数
            String dname = req.getParameter("dname");
            int result = deptService.addDept(new Dept(dname));
            if(result > 0){
                //使用重定向
                resp.sendRedirect("dept?action=list");
            }
        }else if("delete".equals(action)){
            String sid= req.getParameter("id");
            int id= Integer.parseInt(sid);
            int result = deptService.deleteDeptById(id);
            if(result > 0){
                resp.sendRedirect("dept?action=list");
            }
        }else if("toupdate".equals(action)){
            String sid= req.getParameter("id");
            int id= Integer.parseInt(sid);
            Dept dept = deptService.findDeptById(id);
            //把数据放入请求域中
            req.setAttribute("dept", dept);
            //在哪个页面显示数据
            req.getRequestDispatcher("/update.jsp").forward(req, resp);
        }else if ("update".equals(action)){
            String sid= req.getParameter("id");
            int id= Integer.parseInt(sid);
            String dname = req.getParameter("dname");
            int result = deptService.updateDept(new Dept(id, dname));
            if(result > 0){
                resp.sendRedirect("dept?action=list");
            }
        }




    }
}
